Machine for spraying paper receptacles.



H. F. PROVANDIE.

MACHINE FOR SPRAYING PAPER RECEPTACLES.

APPLICATION FILED AUG.30, 1913- LQIQQ55QB Patentedl Mar. 27, 1917.

2 $HEETSSHEET I.

H. F. PROVANDIE.

MACHINE FOR SPRAYING PAPER RECEPTACLES.

Patented Mar. 27,1917.

APPLICATION FILED AUG.30.1913.

2 SHEETSSHEET 2 nil/MU it Um HERBERT F. PROVAN-DIE, OF MELROSE,MASSACHUSETTS, ASSIGNOR TO AMERICAN WATER. SUPPLY COMPANY OF NEWCORPORATION 01 MASSACHUSETTS.

ENGLAND, OF BOSTON, MASSACHUSETTS, A

\ MACHINE FOR SPRAYING PAPER RECEPTACLES.

Specification of Letters Patent.

Patented Mar. 27, 1917..

Application filed August 30, 1913. Serial No. 787,431.

To all whom it may concern: I

Be it known that I, HERBERT F. PROVAN- DIE, a citizen of the UnitedStates, residing at Melrose, in the county of Middlesex and State ofMassachusetts, have invented an Improvement in Machines for SprayingPaper Receptacles, of which the following is a specification.

This invention relates to a machine for spraying liquid parafiin-wax orequivalent material on the exterior or interior surface, or both, ofpaper receptacles, thereby to coat them with a thin layer or film ofparaffinwax. The invention has for its object to provide a plurality ofholders or forms which support the paper receptacle, and which are madeas skeleton-like structures to admit of the interior of the receptaclesbeing reached by the spray; also to provide for rotating said holders orforms at a high speed to prevent pyramiding of the wax on the surface ofthe receptacles while said wax congeals; also to provide aheating-compartment with openings at its ends to admit of the formspassing through it from end to end, said compartment containing thespraying-apparatus; and said compartment is made quite long to provide aspace at the side of the spraying-apparatus to admit of the formsremaining therein for a short period of time after the receptaclesthereon have been sprayed, during which time they are rotated at a highvelocity to assist in spreading the liquid paraifin-wax evenly over thesurface or surfaces of the receptacle, thus to prevent the wax fromrunning down the sides of the receptacle, and from forming a pyramid onthe surface; also to provide means for engaging the receptacles on theforms to hold them thereon while the forms are being rotated; also toprovide automatic means to move said holding-means into and out ofengagement with the receptacles on the forms, respectively, as the formsbearing them enter and leave the heating-compartment; also to provide aturret bearing a plurality of forms, and means to intermittingly rotatesaid turret, so that during the pauses receptacles may be placed on someof the forms, and other receptacles reposing on the forms may be sprayedand other receptacles may be removed from the forms; also to arrange theforms in groups or pairs for the convenience of the operators who wishto work with both hands, thus enabling them to work with great rapidityyet without discomfort.

Figure 1 is a plan view of a sprayingmachine for this invention.

Fig. 2 is a vertical section of the machine shown in Fig. 1, taken onthe dotted line paper receptacles embodying Fig. 3 is a sectional viewillustrating the heating compartment in rear elevation, the formsentering one end and leaving the other end of said compartment.

Fig. 4 is a horizontal section of the heating compartment taken on thedotted line M, Fig. 3.

Fig. 5 is an enlarged side elevation of one of the forms and means forrotating it, and the holding-means for a receptacle which is placed onthe form.

Fig. 6 is a plan view of the form and associated parts represented inFig. 5.

Figs. 7 and 8 are details to be referred to.

10 represents a turret of circular form which is secured to asleeve 12,having its bearing in the frame of the machine, and said turret isdesigned to be rotated intermittingly, and, as here shown, a crown gear-Wheel 13 is secured to the sleeve 12, which engages a pinion 14:,secured to a shaft bearing a gear-wheel 15, which is engaged by amutilated gear-wheel 16 secured to the mainshaft 17, which is driven byany suitable means, as for instance, said shaft 17 may have secured toit a Worm-wheel 18, which is engaged by a worm 19, on the shaft of anelectric-motor. The mutilated gear-wheel16 is so constructed that duringeach rotation of the main-shaft 17 the gear-wheel 15 will be driven onecomplete rotation, and through the gear-wheel 14 the crown-gear-wheelwill be driven one-twelfth of a rotation, and the turret will becorrespondingly rotated. Other driving-means may be employed in lieuofthat here shown, and the turret may be given any desired number ofpauses during each rotation.

The turret bears a plurality of forms 20, here shown as twenty-four innumber, said forms being arranged in groups of two each for theconvenience of the operators.

The forms are made as skeleton-like struc-- tures to admit of the sprayreaching the interior of the paper receptacles which are placed thereon,and they are of any suitable shape corresponding to the shape of thereceptacles which are designed to be placed thereon, but here shown asfrusto-conical merely for illustration. The forms are secured to theupper ends of vertical shafts 21, arranged in upright hearings on theturrets, and the lower ends in, said shafts extend into gear-casings 22,and have secured to them bevel-gears 23, which engage bevelgears 24,secured to horizontal shafts 25, disposed radially on the turret androtatable in suitable bearings thereon; and the inner ends of saidhorizontal shafts have toothed-pinions 26, secured to them and the 1lower end a bevel gear-wheel 29, which'engages a bevelgear-wheel 30,secured to a shaft 31, to which shaft another bevel gearwheel issecured, which engages the bevel gear-wheel 32, secured to a horizontalshaft 33, bearing the toothed-pinion 34, which engages a toothedgear-wheel 35, secured to the main-shaft 17. By means of the gearingthus described the crown-gear-wheel 27 is rotated continuously andconsequently all of the shafts 25 and all of the forms are rotatedcontinuously and at a high speed.

extremity a vertically disposed center-pin,

Other forms of a earin may be employed, however, in lieu 0 that ereshown for continuously rotating the forms.

Each form has associated with it holdingmeans for the paper receptacleswhich are 4 placed thereon, and, as here shown, a bracket 40 is extendedupwardly from the turret adjacent each form which has pivotallyconnected with it, at its upper end, an arm 41 which extends over theform and bears at. its

42, which is yieldingly supported and arranged for-engagement with thepaper-receptacle, coincident with its axis. The arm 41 is movable on itspivot to bring the center-pin into and out of engagement'with the paperreceptacle, it being represented at the right, Fig. 2, and also in Fig.5 as in engagement with the paper receptacle, and at the left of Fig. 2as out of engagement therewith. A spring 45 is connected at one end withthe arm 41, and at the other end with the bracket 40, which springextends across ,the pivot-pin, and as the arm is moved from one to theother side of said pivot-pin, said spring acts to hold the arm in eitherposition it may be set, and also .assist in moving said arm in eitherdirection pin to engage and disengage the paper-receptacle on the form,and, as here shown, 49 represents one of the inclined-arms, which isstationarily supported on the heating-compartment, or other convenientlocation, and is arranged at the entrance to the heatingcompartment, seeFig. 3, and when engaged by the pin 48, acts to move the arm on.itspivotto cause its center-pin to engage the receptacle on the form; and 50represents the other inclined arm which is also stationarily supportedon the heating-compartment or elsewhere, and is arranged at the exit ofthe heating-compartment, and when engaged by the pin 48, acts to movethe arm on its p1vot to cause its center-pin to disenage the receptacleon the form, and to move ar enough to entirely expose the top of theform.

The heating-compartment 60, of arcuate form, is supported on themachine-frame and incloses a su'fiicient portion of the turret toinclude three pairs of forms, yet it may be made of a greater or lesserlength, and it has an opening at the insideto receive the edge of theturret and is open at each end to permit the forms on-the turret toenter at one end and pass through it and leave at the other end. Saidcompartment is designed particularly to contain the spraying-apparatusby which liquid paraffin-wax is deposited on the exterior or interiorsurfaces or both of the paper-receptacle, as may be re uired.

he spraying-apparatus itself forms no art of this invention, but for thesake of illustration, is represented inFig. 2, as comprising a set ofspraying-nozzles 65, 66', 67 rising from a receptacle which is disposedat the bottom of the heating-compartment,

and is submerged in liquid paraffin-wax which is contained in saidcompartment, and

vided for the spraying-apparatus whereby its operation is controlled.

As represented in Fig. 8, 7 5 is the controlling-valve for thespraying-apparatus," and an arm 76 secured to its stem which i"connected by a link 77, to an arm 78, whic engages a cam 79, secured tothe shaft 17, and upon each rotation of the shaft 17 the valive isopened and closed. Two spraying-devices are provided, arranged adjacentthe path of movement of the forms and adapted for cooperation with eachpairof forms, while said forms are at rest.

While the paper-receptacles are being sprayed they are rotated rapidlyby the forms bearing them, so that the spray is directed to all parts ofthe surface thereof. The heating-compartment is made quite I operatorsitting at one side of the machine.

places two unsprayed receptacles on two of the forms; then the turretmoves repeatedly a part of a cycle, and the operator continues to repeathis operation and said first two receptacles are moved into theheating-compartment and are heated preparatory to being sprayed; thenthey are moved into osition in front of the sna in -a )aratus- P a:

and are sprayed; then they are moved along but still remain in theheating-compartment and are rotated at a high speed; then they are movedout of the heating-compartl'nent and are brought into position in frontof an operator who removes them from the forms. On account of the greatcapacity of the machine it is designed and intended that two operatorsshall be employed, one to place unsprayed receptacles on the form andanother to-remove sprayed receptacles from the form. i

I claim:-

1. In a machine for spraying paper recep tacles, the combination of aturret, a plurality of forms borne by said turret, a stationaryheating-compartment arranged at the side of the turret and inclosing aportion thereof with the forms thereon, said heating-compartmentadmitting of the passage through it of said forms, a sprayingdeviceassociated with the heating-compartment and arranged in proximity to thepath of movement of the forms, means to inter mittingly rotate theturret, and means to continuously rotate the forms, substantially asdescribed.

2. In a machine for spraying paper receptacles, the combination of arotatable turret, a plurality of forms borne by said turret, astationary heating-compartment arranged at the side of the turret andinclosing a portion thereof with the forms thereon, saidheating-compartmcnt admitting of the passage through it of said formsand being made long enough to inclose at the same time several forms, aspraying-device associated with the heating-compartment and arranged inproximity to the path of movement of the forms, and means to retate theforms while being sprayed and also while contained in saidheating-compartment after they have been sprayed, substantially asdescribed.

3. In a machine for spraying paper receptacles, the combination of arotatable turret, a plurality of forms borne by said turret, astationary heating-compartment arranged at the side of the turret andinclosing a portion thereof with the forms thereon,

said heating-compartment admitting of the passage through it of saidforms and being made long enough to inclose at the same time severalforms, a spraying-device associated with the heating-compartment andarranged in proximity to the path of movement of the forms, and means torotate said forms while contained in said heating-compartment beforethey are sprayed and also while they are being sprayed, and also afterthey have been sprayed, substantially as described.

4. In a machine for spraying paper receptacles, the combination of arotatable turret, a plurality of forms borne by it, a center-pin forengaging the receptacles on the forms, arranged coincident with the axisof the forms, pivoted arms bearing said center-pin, automatic means tomove said arms to move the pins toward and from the forms, a stationaryheating-compartment arranged at the side of the turret and inclosing aportion thereof with the forms thereon, said heating-compartmentadmitting of the passage through it of said forms, a spraying-deviceassociated with the heatingcompartment and arranged in proximity to thepath of movement of the forms, and means to rotate the forms,substantially as described.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

HERBERT F. PROVANDIE.

Witnesses:

JOHN P. WYMAN, AMos L. TAYLOR.

